Oil-well packer



Dec. 16, 1930. P. H. MACK OIL- WELL PACKER Filed July 6, 1927 well tubing to be Patented Dec. 16, 1930 UNITED STATES, PATENT OFFICE PATRICK H. MACK, 0F BRADFORD, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 OIL WELL SUPPLY COMPANY, OF PITTSBURGH, PENNSYLVANIA, A COR.

PORATION 0F NEW JERSEY oIL-w`ELL PAGKER Application mea myc, 1927. serial no. 203,805;

This invention relates to packers designed for use in oil and gas wells, and more particularly to a packer of the hook wall type,

having a hollow body through which the well casing thereof by lowering the packer to the desired position by the tubing employed for conveying the gas or oil from the well to the top thereof. It frequentlyhappens that, after the packer is set in the well, it isnecessary to pull the tubing and if this can be done without disturbingvor removing the set packer, it is very desirable to do so. The present invention is especially designed for accomplishing this end, it being understood that the packerl embodies a construction of such a character that the tubing, after bein pulled as aforesaid, may be again passe downward through the same without disturbino' the-set packer.

lily invention further contemplate-s the employment of a detachable packer head that may be attached to the body of a hollow packer and atubing coupling member as sociated and operable in conjunction therewith for setting the packer and enabling the passed through the packer after it is set. v

Among the objects of the present invention are, to provide a new andimproved packer including a `packer head and a tubing coupling member having co-operating means for connecting and disconnecting said members; to provide a new and improved packerhead including a relatively short. body portion; and, to provide a new and improved tubing coupling member having an elongated body portion adapted to be entered inand withdrawn 'from the body of the head, said members having (3o-operating .seating faces`for reventing the escape 'of oil and gas from theinterior of the packer when the packer is set.

Other objects of the present invention will be apparent from a consideration of the following description ,taken in connection with the accompanying drawings.

In the drawings, which illustrate an application of my-invention:

Fig. 1 is a longitudinal sectional view ofa packer of the hook wall type embodying my invention, the section being indicated on line I-IofFig.3;

Fig. 2, a longitudinalsectional view, particularly showing the detachable packer head and the co-operatingtubing coupling member embodying my invention, the section being indicated on Fig. 3; and

Fig. 3, a detail bottom plan view, showing the head and the coupling member.

Referring to the drawings, 5 designates the hollow body of a well packer, 6 the lower connecting member, and 7 a slightly reduced threaded upper end of the body. Surrounding the body is a packing 'element of rubber` lor other suitable material 8, said packing 8.

being positioned on the body between an annular sliding wedge member 9v and the detachable head, indicated 'generally `by the lnumeral 10. Slidable wedge member 9 is adapted to be forced downwardly between the upper end of a series of slips 11 and the body forvthe purpose of expanding the slips an-d causing them to engage the interior of a pipe or casing or open hole in lwhich the packer is to be set.

The slips are each formed with a shank portion 12 andare designed to be carried on a cage 13. Cage 13 has a downwardly projecting part 14, having a slot 15 adapted to Vco-operate with a pin 16 on the body for maintaining the slips and the other parts in the desiredposition during the act .of letting the packer down into the well. Cage 13 also carries a series of leaf springs 17, saidleaf springs being Xedly secured to the cage at their lower ends by means of rivets 18, and

bearing upon the shank portions of the sli s at their upper ends. The parts above escribed, with the exceptiono .the head 10, 1 are of the usual and well known construcv tion, and form no part of theI present in' vention. 4

The head 10 as illustrated andas preferred comprises a relatively short body portion and' is designed to be mounted on the upper end of the bod 5 of the packer. This head is invteriorily t readed, as shown at 19, and at` its lower end is formed'with an annular flange ino and an annular shoulder or ledge 21, said l regular 'slot opening throu h the lower end L shoulder and flange being adapted to bear thereof, anda in carrled y the head and- Y is positioned 011 the body of the packer. The

head l0 at its upper; end is formed with a' beveled portion 22, an inclined seating face 23, and is provided with a pin 24. Associated with the head and designed to Y cooperate therewith -is a tubing coupling Aits member 25. Said member as shown includes an elongated body 26 formed with an -irregularly .shaped slot or slots 27 designated to rece'ive the in or pins 240i the head. Coupling mem r 25, in addition to the body,

comprises a cap member, 28. This member is.

detachably connected with the elongated body y end of a vertic 26, and for this purpose, I threadthe interior of said cap, as shown at 29, and form the' A upper end of the body with a threaded portion 30. The cap member is also formed with v threaded portions 31 and 32 designed to engage the threaded ends of tubing sections 3 3,

and with an annular inclined valve face 34 adapted to make sealing contact with the inclined face or seat -23 of the head l0, thus forming, at the juncture of said cap and head,

a seal'to prevent theescape ofI fluids from the interior of the packer when thepacker is set or when the shown by Fig. 1.

.When the packer is being loweredA into the parts are in the position desired position in a well, the coupling member and the head will be positioned as s hown by Fig. 2, with the pin 24 of the head resting in an inclined portion of the slot 27. After the vacker has reached the desired position A for eing set, the tubing 33 is given a quarter turn to the left. This movement disen ges members or hooks v14 on cage 13,' and a ows the slips 11 to engage the hole or casing. The o tubing and the coupling` member-are then lowered relativlly tothe ead until the .u per thus seating the packer. -When itf is desired member intojthe position shown byV Fig. 2

' and then impart a quarter turn. t the sai ti e lar rtionvcarred b :the cap and substaxh.A h, lyinugly fitting'l e bore of the head and tpe coupling'member, thus brin'gin the pin '24 In this-position, 1t will-be evidentthat packerwithout| disturbing'it. d

The combination with a tubular body of a packer, ajrelatively short head on said .body l having its bone o f substantially the same-dl-l ameter as the adjacent portion of the bod a cap surmounting the head' and having y extending portion o the slot 27 comes into contact with the pin 24,

'against the packing'element 8 when the head disposedin sai slot.

In testimony whereof I aix PATRICK Y to raise the tubing and the coupling member, L it is merely'necessary toraise the cou linging engagement therewith,l a depending tubih X, .Skid tubular member lhaving an ir- Y aus `las 

